Furniture.



PATENTED MAR. 24, 1908.

W. J. TINGDAHL.

-PURNITURE.

APPLICATION FILED JUNE 14, 1905.

2 SHEETS-SHEBT 1.

lnve/v'otor: Wag #7162 JTingdaizL No. 882,656. PATENTED MAR. 24, 1908. W. J. TINGDAHL.

FURNITURE.

APPLICATION FILED JUNE 14,1905.

2 SHBETS-SHEET 2.

dra s.

vation of the piano stool shown in Fig. 1

FURNI'LURE Application filed June 1905.

To all whom it m l! y con cern:

Beiit known that. l, 'iuzrnio J. 1 lXGDAlll', acitizen of the United States, resid Lowell, in the'county ol' Middlesex oflvlassachusetts, have invented ment in l urniture, of which the following description, in connection with the actainniany ing drawings, is a sptwilication, like letters on the drawings representing like iarts.

My invention relates to furniture and more particularly though not exclusively to seat supports, the some hein; herein shown and described for illustrative purposes with reference to a piano stool havinp a revolving seat.

My invention will he host umlerstood hy reference to the. following description when taken in connection with the. ata-ompanying illustration of one s iccilic embodiment thereof, suhmittedtor il ustrative purposes, while its scope will he more particularly pointed out in the apptmded claims.

In the llrawings,- Figure section taken through the ncctions ol a piano stool emhodyinp' one form of my invention; Fig. 2 is a plan in section on the line .2 2 in Fig. .1 Fig. 23 is an elcing at and State an improve- 1 is a vertical supporting con-- with the scat elevated and the (,-onnec.tions extended, and Fig. 4 1s a similar view showthe scat depressed and the connections contractor].

The stool shown in Fig. l, which shown merely to illustrate one embodiment ol' my invention disclosed, comprises the swivelcd revolving seat-portion (I and the horizontal, flat -seatlilie sup orting ortion or top I) mounted upon the'legs 0, one ieceentrically attached thereto the seat portion being adjustable for elevation or depression relatively to the supporting portion by means of adustable connections between the two nieinhers.

The particular construction of adjustable supporting connections employed upon the stool illustrated is shown in detail in l igs. '1 and 2.

The supportin ortiou l; is out to re oeive the base piece raving the irregular cross-section shown in Fig. '2 and provided with the overlying flange e. The base piece is secured to the sup iorting portion L hy a supportingplatef nich is screwed to the two lugs shown upon the base piece and is ot a size to overlie the under sine of the sup porting portion, acting, therel'ore when secured in position as a washer to hold the base Specification of Letters Patent.

Serial No. 235,160.

piece and its attached parts securely to the stool.

'lhesupporting plate f provides support lor the vertical screw the latter hcing held stationary in the platcf. as, tor example, h squaring, the lower end thereof and holding it in a squared recess hv means ol' the set screw shown. Adju tahle support tor the seat (1. is provided hy the screw r wl ich engages with the rotatable nut /1, the latter heiup ill-- tached to or as herein a part oi' the upwardly projecting hollow spindle i, which is fixedly ccured at its upper end, as hy a taper lit to the seat plate j, the latter screwed to the under side. of the seat o. A thread carrying means mounted in the aperture in said seatlihe supporting portion is all'orded by my invention.

When the so is in its raised position, as shown in Figs. and Z), the elongated connection is rendered tirm and secure hy means of the telescopic sliding supporting sleeve it provided with hahhitt hearings within which the nut. is adapted ol the sleeve is provided wit-hithe enlarged head [slidahle also in hahhitt hearings in a cylindrical recess or journal hox within the. hase (I, said enlarged head heine' limited in its .upward movement h v an overlying shoulder in on the. hasc picciu 'lhe upper end 'ol' the sleeve is provided with a shouldered portion n which engages with the correspondiiigly shouldered part ol' the out, so that as the latter is raised h v appropriate rotation ol' its spindle it carries with it the sleeve until the limit ol' upward movement. is reached hy engagement ol' the enlarged sleeve head with the shouldcrm. which is die position shown in Fig. l. in this position although the nut has approached the end of the screw, 'lirni and rigid support is given to the nut and its spindle directly t'roni the hose hy means ot' the then extended supporting sleeve Z.

\Yhen the nut is turned rovers cred until the shoulder o on seat plate meets the upper (ii-i the screw entering within the l.- ot' the (lest-curling spindle. rotation carries the sleeve iii the descent of the out unti head of the sleeve reaches the recess and the sleeve is wlmlly or suhsta: tially withdrawn into the oasepiece. nut continues to lower until it. aiso reaches a t l i it is lowthe to slide. "li he lower end pa e I stantially as shown in dotted lines in Fig. 1.

The shoulder m on the base prevents the separation of the sleeve and the base so that when the upward limit of movement is reached, as shown in Fig. 1, further exteiw sion or separation is prevented. 'lhe supporting connections, however, are readily dismantled by removing the screws which fasten the supporting plate f to the base piece 41, thus permitting the screw 9 to be turned and withdrawn from engagement with the nut.

It will be seen that the lowering of the seat is not accompanied by any corresponding lowering of the screw and that the connections when contracted present substantially no visible portions beneath the seat within the normal line of vision and the central space between the supporting legs, as in the illustrated embodiment of the invention, may remain open and unobstructed, thereby presenting a more pleasing appearance to the observer.

In Figs. 3 and l I have shown the relative positions of the seat portion and the support ing portion in the elevated and depressed positions relatively to the iormer. While the adjus ble connections between the seat and support are preferably located so as to have no parts, or substantially none, projecting beneath the seat into the normal line of sight, my invention obviously is not limited to this preferred form or arrangement.

While for illustrative purposes I have shown one form and embodiment of my invention and have described with particularity a construction of adjustable suppport which I have found simple, effective and pleasing inappearancc, it is to be understood that my invention is not limited to the dc tails or the form or arrangement of parts or the application made thereof in the illustrated form, but that the same may be employed for other purposes than that here disclosed or suggested and with extensive modifications from the form disclosed, without,

however, departing from the spirit of the.in-

vention.

Claim s 1. In a swivel chair, the combinati n or a.

upper end, a bearing sleeve inclosing said nut, a journal box inclosing said bearing sleeve, a washer secured to said journal box and supporting said screw, and means for securing said spindle to the chair body.

3. In a swivel chair, the combination of a stationary screw, a nut engaging said screw and provided with a hollow spindle at its upper end, a bearing sleeve inclosing said nut, a journal box inclosing said bearing sleeve, a washer securing said jOf'Tli Ll box-to the chair base and supporting said screw and means for securing said spindle to the chair body.

4. In a swivel chair, the combination of-a stationary screw, a shouldered nut engaging said screw and having a hollow spindle at its upper end, a shouldered bearing sleeve inclosing said nut with soft metal bearings for said nut, a journal box inclosing said bearing sleeve having soft metal bearings forsaid sleeve and a shoulder for limiting the upward movement of same, a washer secured to said journal box and supporting said screw, and means for securing said spindle to the chair body.

5. An article of furniture having a supporting portion and an adjustable portion and adjustable connections between said portions comprisin a raised member, a sleeve longitudinally s id'able in said raised member, and threaded enga 'ing members within said sleeve, one of sai members being in sliding engagement with said sleeve.

6. 11 article of furniture having a sup porting portion and a supported portion and adjustable connections between said supporting and supported portions comprisi'n a recessed mom or, ascrew attached to sai recessed member, a hollow nut carryin member adapted for engagement with said screw, and a sleeve telescopically mounted in said recessed member but adapted to receive bearing support therefrom, said nut-carryin member being telesco ically mounted in said sleeve and receiving from.

7. In a piano stool, the combination with a seat portion and a sup orting portion, of adjustable connections etween the same comprising a screw and a hollow nut-carrying member engaging said screw, a bearing member inclosing said nut and a member inclosing said bearing member, said bearin inclosing member being secured to said screw.

8. An adjustable seat having a horizontal seat-like supporting portion provided with a central aperture, legs attached to and supporting the same, a revolving seat, adjust able supporting connections between said seat rind supporting portion, and means for attaching said connections to said support-,

,ing portion comprising a flanged chambered base member having a portion provided with e'aring support therelugs adapted to enter the aperture in said T the said legs,

supporting member while the flange thereof overlies the said aperture, and a flanged supporting member adapted to underlie the aperture of said seat supporting member and 1 to be secured to the lugs of said base member.

9. An article of furniture comprising a;

revolving seat portion, a substantially flat horizontal seat lke supporting portion, legs a complementally threaded member depending from said seatlike portion and opcratively engaging said non-rotary threaded member, said casting extending only slightly below the lower face of the seat-like supporting portion, thereby presenting below said lower face a receiving j socket of less vertical extent than the diseecentrieally attached thereto and constitutl ing the sole support therefor, said seat-like supporting portion having an aperture there in substantially centrally located with respect to the point of attachment of said legs tiereto, a metallic casting seated in said aperture and having means securing it to the seat like supporting portion, said casting being axially and centrally disposed with respect to the saidlegs and having a closed lower end and a non-rotary threaded member rising centrally from said closed lower end, said non-rotary threaded member being centrally and axially disposed with respect to tance that-the non-rotary threaded member rises above the upper face of the seat-like supporting portion, said casting extending above the said, upper face of the seat-like supporting portion to present an upper bearing support, the said non-rotary threaded member being concealed from view, whether 

